Chaney Instrument 00594R Users Manual

MI-2531

Indoor main unit of Full Weather Station Rev (0) Dated 16/8/05

1. INTRODUCTION

Remote Full weather station is composed of MI2527, MI2528, MI2529, MI2530 and MI2531.

-MI2527 is outdoor temperature and humidity remote transmitter.

-MI2528 is outdoor rain gauge remote transmitter.

-MI2529 is outdoor wind speed and wind direction remote transmitter.

-MI2530 is outdoor temperature, humidity and RCC(radio control clock) remote transmitter.

-MI2531 is indoor main unit.

Caution: The user is cautioned that changes and modifications made to the equipment without the
approval of manufacturer could void the user's authority to operate this equipment.

Notes: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.

FCC Warning:

This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.

2. FEATURES

1) Remote receiver

2) Indoor temperature

3) Indoor humidity

4) Air pressure

5) Weather forecast

6) Radio control clock with calendar and moon face

7) Wind chill calculate

8) Heat index calculate

9) Dew point calculate

10) Time alarm, temperature alarm (outdoor & indoor), humidity alarm (outdoor & indoor), wind
speed alarm, storm alarm, Rain fall alarm, wind chill alarm, heat index alarm, dew point alarm.

Microtech Components Ltd. Room 21, 10/Fl., Leader Industrial Building, 57-79 Au Pui Wan St., Fatan, Hong Kong

Tel : [phone] Fax : [phone] Email : [e-mail]

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MI-2531

Indoor main unit of Full Weather Station Rev (0) Dated 16/8/05

11) Total 8 key :

MAX(+), MIN(-), DISPLAY(RECORD), CLEAR(EXIT), SETUP(ON/OFF/PRESSURE)
ALARM, CHANNEL(WAVE), SNOOZE

3. FUNCTION DESCRIPTION
3-1. POWER ON or RESET

When Power on or reset the LCD will full display for 5 seconds, the main unit will measure indoor

temperature, indoor humidity and air pressure during this 5 seconds, then it will show the temperature,
humidity value and time (default is 01/01-2005,12:00AM at EST time zone) on LCD, all of the outdoor
value will be shown ---, forecast area will show cloud with blinking, pressure bar area will be clear,
pressure area will show “0 METER” with METER icon blinking, it ask user to input the altitude of the
station, you can press (+) or (-) key to select METER or FEET unit, then press SETUP key to set the
altitude (the METER or FEET icon will become static and the “0” digit will blink), press (+) or (-) to
increase or decrease the altitude with 10meter(or feet) per step, the range is from -100 to 2500 meter
(or from -330 to 8250 feet). After setting the altitude, press SETUP key to confirm and go into weather
setting(or press CLEAR to quit the initial setting with the cloudy weather), press (+) or (-) to set the
current weather, then press CLEAR to quit the initial setting. If no key was pressed for 30 seconds, it
will quit initial setting automatically with the status shown on the LCD.

When completed the initial setting, it will begin to search the RF433 signal from outdoor transmitter .
When turn on the rf433 module, the antenna icon will be waving to indicate signal is being picked up.
When a certain signal is picked up and decoded successfully, it will be shown on LCD, and the main
unit will turn off the rf433 module for 3 seconds, then to pick up next signal, the search time is maximum
6 minutes. When maximum 5 different signal is searched, it will quit search mode and go into normal
mode. If the RCC signal had been received and decoded successfully, the antenna icon will be full
display and the OK and WAVE icon will be light up. If no RCC signal is detected, the antenna icon will
be blinking, WAVE and OK icon is disappeared. If any RCC signal had been detected (but no all), the
antenna icon will be blinking, the WAVE icon is light up but the OK icon is disappeared. During the
signal picked up period, the antenna icon will change to waving form.

The HEAT INDEX will be calculated from the temperature and humidity value in MI2530.
The WIND CHILL will be calculated from the temperature value in MI2530 and the wind speed

value in MI2529.
The DEW POINT will be calculated from the temperature value in MI2530.

3-2. REVIEW THE MESSAGE

3-2-1 In normal mode, press DISPLAY to view and toggle the display in cycle:

WIND CHILL Æ HEAT INDEX Æ DEW POINT Æ(if rain gauge is added) Rain in last hour

Total rain since last “clear” Rain in user defined days Å Rain in last 24 hours

- At the total rain status, press & hold the CLEAR key for 3 seconds can clear the total rain record.

Microtech Components Ltd. Room 21, 10/Fl., Leader Industrial Building, 57-79 Au Pui Wan St., Fatan, Hong Kong

Tel : [phone] Fax : [phone] Email : [e-mail]

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